CN107637157A - Method and apparatus for the sub-channelizing transmission plan in WLAN - Google Patents
Method and apparatus for the sub-channelizing transmission plan in WLAN Download PDFInfo
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/002—Transmission of channel access control information
- H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/30—TPC using constraints in the total amount of available transmission power
- H04W52/34—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
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Abstract
Disclosed is equipment, system and/or the technology of subchannel signaling information are used between access point and first station.The up-link triggering that first station is sent to from access point can be received, and a mapping for indicating at least one subchannel shared available for the space at second station can be transmitted from first station.First station can receive from access point to be shown to transfer the response received by least one access point from second data stood and/or the data at least one subchannel.OFDMA transmission with subchannel/subband available for transmission data can be determined.Energy in subchannel/subband can be measured, and/or can be compared with dynamic and/or static threshold.As an example, subchannel/subband can be more than in idle or busy state based on the energy measured is also no more than the threshold value to determine.
Description
The cross reference of related application
This application claims the rights and interests for enjoying the U.S. Provisional Patent Application 62/154,621 submitted on April 29th, 2015, its
It is middle to introduce the overall disclosures of all these applications comprehensively in a manner of to illustrate comprehensively herein as referring to, for use in
All purposes.
Background technology
Using architecture Basic Service Set (BSS) pattern WLAN can have for BSS access point (AP) and/or
The one or more stations (STA) associated with the AP.AP can access and/or be docked to distributed system (DS) and/or can transport
Send the wire/radio network of the other type for the portfolio for being to and from BSS.STA portfolio is gone to outside BSS to be passed through
AP reaches and/or can be delivered to STA.The portfolio of destination outside from STA to BSS may be sent to that AP and/or can quilt
It is delivered to corresponding destination.Portfolio between the STA inside BSS can be sent by AP, and wherein source STA can be with
The portfolio is sent to AP.The portfolio can be delivered to destination STA by AP.Business between the STA inside BSS
Amount can be point to point traffic.Point to point traffic can be directly between source and destination STA by using 802.11e
DLS or 802.11z tunnels DLS (TDLS) direct link establishes (DLS) to send.Use independent BSS (IBSS) pattern
WLAN will not have AP, and/or STA directly can be communicated with other STA.This communication pattern is referred to alternatively as " self-organizing
(ad-hoc) " communication pattern.
The content of the invention
It can include connecing for the technology using subchannel signaling information between at least one access point and first station
Receive the up-link triggering that first station is sent to from least one access point.These technologies can be included from first
Individual station transmission one is used to indicate to be available for second station to perform the mapping of at least one subchannel of the shared processing in space.This
A little technologies, which can be included on first station, receives the response from least one access point, and the wherein response shows extremely
Transferred on few sub-channels and receive the data from second data stood and/or at least one access point.
These technologies can include determining that whether the OFDMA transmission with subchannel can be used for transmitting data.These technologies
OFDMA transmission of the identification from second station on first station can be included in.These technologies can include measurement and be used for OFDMA
Energy in the subchannel of transmission.These technologies can include comparing the energy measured with threshold value.These technologies can wrap
Include：As an example, if the energy measured is not more than the threshold value, it is determined that subchannel is idle.These technologies can include：As
Example, if the energy measured is more than the threshold value, it is determined that subchannel is busy.The threshold value can be dynamically determined, or
Can also be static.
These technologies can be performed by access point (AP) equipment in the first Basic Service Set (BSS).The AP can be with
One or more of first BSS stations (STA) are communicated.These technologies can include determining that one or more subbands, described
The related overlapping BSS of subband is possibly used for one or more of the 2nd BSS STA is implemented up-link (UL) communication
(OBSS) space reuse processing (OBSS SR).These technologies can include determining that on every in one or more of subbands
The specific OBSS SR information of one subband.The customizing messages can be included with one or more of subbands are used for and UL
Communicate one or more threshold values that related OBSS SR possibility is associated.These technologies can include coming via emitter
The customizing messages is sent to one or more of the first BSS STA.
These technologies can be performed by the station (STA) in the first Basic Service Set (BSS).The STA is able to detect that
The communication of access point (AP) equipment in the 2nd BSS.These technologies can include receiving with having from AP by receiver
It is possibly used for one of overlapping BSS (OBSS) space reuse (OBSS SR) related to up-link (UL) transmission that STA is implemented
Or the information that multiple subbands are relevant.These technologies can include determining that at least one subband in one or more subbands is applied to
The OBSS SR related to UL communications.These technologies can include Carrier Sense Multiple Access of the modification with conflict avoidance
(CSMA/CA) mechanism, it is described at least one in one or more of subbands so as to which the transmission priority of lifting is assigned to
Subband, or the transmission priority of lifting is assigned to comprising at least one subband in one or more of subbands
Transmission channel, and at least one subband being restricted in one or more of subbands will be transmitted.These technologies can be with
Including being passed by emitter and using at least one subband in one or more of subbands to send OBSS SR UL
It is defeated.
These technologies can be performed by first station (the first STA) in the first Basic Service Set (BSS).Described first
Individual STA can be UL OFMDA STA.These technologies can include setting from the access point (AP) in the first BSS via receiver
Standby receive can be used for the phase that communicated with one or more of the 2nd BSS STA up-link (UL) with one or more subbands
The associated customizing messages of the OBSS SR of pass possibility.The customizing messages can include with it is every in one or more subbands
One subband one or more threshold values associated available for the OBSS SR related to UL communications possibility.These technologies can
With including can be to the biography of at least some information in following at least one transmission customizing messages to send by emitter
It is defeated：The other stations (STA) of one or more of AP or the first BSS.The transmission can be by one or more of the 2nd BSS
At least one STA detections in STA.At least one STA in one or more of STA in 2nd BSS can be with
It is OBSS STA.
Brief description of the drawings
Fig. 1 is the illustration on EDCA operations.
Fig. 2 is the illustration on energy measuring idle channel method and/or system.
Fig. 3 is the illustration on the CCA in UL-OFDM.
Fig. 4 is the example on WLAN (WLAN) equipment.
Fig. 5 is the illustration on local concealed nodes.
Fig. 6 is to believe with what system described herein, equipment and/or method were used together with OPFDMA space reuses
The illustration MAC header of breath.
Fig. 7 is to carry OFDMA space reuse information with what system described herein, equipment and/or method were used together
PHY preambles example.
Fig. 8 is the OBSS nets with OFDMA transmission that can be used together with system described herein, equipment and/or method
The illustration of network.
Fig. 9 is to be repaiied with the process in the UL OFDMA transmission that system described herein, equipment and/or method are used together
The example of the dominant signaling procedure of the space reuse changed, which show what is retransmitted for one or more or each STA
The reuse information of one or more or all subchannels.
Figure 10 is the example of the explicit signaling process of the space reuse of the modification in being transmitted for UL OFDMA, it illustrates
The specific sub- letter that the one or more or each STA that can be used together with system as described herein, equipment and/or method are retransmitted
The reuse information in road.
Figure 11 A are the examples for the OFDMA parameter configurations that can be used together with system described herein, equipment and/or method.
Figure 11 B are the examples for the OFDMA parameter configurations that can be used together with system described herein, equipment and/or method.
Figure 12 is the detailed CCA processes for the illustration that can be used together with system described herein, equipment and/or method.
Figure 13 be the illustration that can be used together with system described herein, equipment and/or method based on RU9 with based on
CCA based on OFDMA.
Figure 14 A and Figure 14 B be the illustration that can be used together with system described herein, equipment and/or method based on point
The CCA processes of layer sub-channels.
Figure 15 is the illustration with the designator tone that can be used together with system described herein, equipment and/or method
Parameter configuration.
Figure 16 is the example for having used indicator channel that can be used together with system described herein, equipment and/or method
Show that OFDMA is transmitted.
Figure 17 is the Illustrative Network that can be used together with system described herein, equipment and/or method.
Figure 18 is the illustration with indicator channel that can be used together with system described herein, equipment and/or method
Subchannel distribution.
Figure 19 is the illustration reception signal that can be used together with system described herein, equipment and/or method.
Figure 20 is the illustration OBSS networks that there is OFDMA to transmit.
Figure 21 is the example with modified CCA that can be used together with method described herein, equipment and/or system
Show that OBSS is transmitted.
Figure 22 A are the system diagrams for the exemplary communication system that can implement disclosed one or more embodiments.
Figure 22 B are illustration wireless transmitter/receiver units (WTRU) that can be to be used in communication system described here
System diagram.
Embodiment
The embodiment on illustrative embodiment is described referring now to different accompanying drawings.Although the description provides
Detailed example on possible embodiment, it should be mentioned, however, that these details should be as example, and
Scope of the present application will not be construed as limiting.
By using 802.11ac infrastructure mode of operations, AP can upload mark of delivering letters, the fixation in fixed channel
Channel can be main channel.The width of the channel can be 20MHz, and/or the channel can be BSS working channel.STA can
To be connected using the channel to be established with AP.Primary channel access mechanism in 802.11 systems can have conflict avoidance
Carrier Sense Multiple Access (CSMA/CA).In this mode of operation, the STA including AP can perceive prevailing channel.Such as
Fruit detects the channel busy, then STA can retract.Transmission can be limited to by the appointed time by specifying the list in BSS
Individual STA is performed.
In 802.11n, high-throughput (HT) STA can be communicated using the channel with a width of 40MHz.The processing
The continuous channel with a width of 40MHz can be formed come real by the way that 20MHz main channel is combined with 20MHz adjacent channels
It is existing.
In 802.11ac, very high-throughput (VHT) STA can support with a width of 20MHz, 40MHz, 80MHz and/or
160MHz channel.40MHz and/or 80MHz channels are by combining and similar continuous of 802.11n as described above
What 20MHz channels were formed.160MHz channels can not connect by 8 continuous 20MHz channels of combination and/or by combining two
Continuous 80MHz channels are formed.This processing is referred to alternatively as 80+80 configurations.For this 80+80 configurations, by channel
Data after coding can be transmitted by piecewise analytic device, and the piecewise analytic device can be divided into two streams.At one
Or it can individually perform inverse FFT (" IFFT ") and/or Time Domain Processing on multiple or each stream.It is described
Stream is mapped to two channels, and/or the data can be transmitted.On the receiver, the mechanism can be inverted, and/or can
So that data splitting is sent to MAC.
802.11af and/or 802.11ah supports time 1GHz mode of operations.With making in 802.11n and/or 802.11ac
Multi-channel operation bandwidth and/or carrier wave are compared, and the multi-channel operation bandwidth and/or carrier wave of these specifications relative can be reduced.
802.11af supports 5MHz, 10MHz and/or 20MHz bandwidth in TV white spaces (TVWS) frequency spectrum, and/or 802.11ah to support
1MHz, 2MHz, 4MHz, 8MHz and/or 16MHz bandwidth of non-TVWS frequency spectrums are used.Possibility use-case on 802.11ah is
Support instrument Type Control/machine type communication (MTC device in grand overlay area).The ability that MTC device has is possible to
It is limited, including the limited bandwidth of support and/or supports long battery life demand.
Support one or more or multiple channels and/or the wlan system of channel width (such as 802.11n,
802.11ac, 802.11af and/or 802.11ah) channel for being designated as main channel can be included.The main channel can
With but not necessarily there is the bandwidth equal with the maximum public bandwidth of operation that one or more of BSS or all STA is supported.It is main
Channel width may be by the STA that minimum bandwidth mode of operation is supported in the one or more or all STA to be worked in BSS
Limitation.In the example on 802.11ah, if there is the STA (such as MTC type equipments) for supporting 1MHz patterns, then
Even if other STA in AP and/or BSS can support 2MHz, 4MHz, 8MHz, 16MHz or other channel width mode of operations,
The bandwidth of main channel also can be 1MHz.Carrier sense and/or NAV, which are set, can depend on main channel state.For example, if
Main channel is busy (such as because only supporting the STA of 1MHz mode of operations to be carrying out the transmission for AP), then even if mostly
Several available bands keeps idle and/or available, and whole available bandwidth also still can be considered as busy.
In the U.S., the available band for being available for 802.11ah is from 902MHz to 928MHz.In South Korea, available band is
917.5MHz to 923.5MHz；And in Japan, the available band it is 916.5MHz to 927.5MHz., can according to country code
Total bandwidth for 802.11ah is 6MHz to 26MHz.
Enhanced distributed channel access (EDCA) is the base in order to support the QoS of priority ordering and introduce in 802.11
This DCF (distributed coordination function) extension.EDCA supports the medium access based on contention.Show in Fig. 1 in 802.11n
EDCA operation.Point coordination function (PCF) can support the limited time service, wherein AP meetings using the channel access of contention-free
One or more of poll BSS or each STA.AP can send wheel after PCF interface intervals (" PIFS ") have been waited
Message is ask, and if the client information not sent, then it can return to empty data frame.This to low duty ratio and/or
It is to determine for severe/bursty traffic, is fair and/or effective.The channel access controlled by Hybrid Coordination Function (HCF)
(HCCA) can be enhancing to PCF, wherein AP can in contention period (CP) and/or contention-free period (CFP) poll
STA.It can rely on a poll to transmit one or more or multiple frames.
Efficient WLAN (HEW) potential application includes emerging usage scenario (such as data transfer of competitive sports), height
User density scene (such as railway station and/or enterprise/retail environment), and/or for transmission of video dependency degree lifting scene,
And/or the wireless service for medical applications.
In 802.11 current embodiments (802.11a/g/n/ac/ah), transmitting procedure, which assume that, to be allocated
All bandwidth all be used for transmit and/or receive.OFDMA is that a kind of be used in LTE and/or WiMax is existed with solving picture
Like that by method of all channel distributions to the shortage efficiency caused by the scheduling of resource of unique user in 802.11ac.It is if straight
Connect and OFDMA is applied to WiFi, then be possible to that back compatible sex chromosome mosaicism can be introduced.Especially, the money based on cooperation orthogonal piece
Source distribution (COBRA) introduces OFDMA methods to solve WiFi back compatibles sex chromosome mosaicism and/or especially because based on channel
Recessive efficiency caused by scheduling of resource is low.For example, COBRA can realize one or more or it is multiple compared with
Transmission on small frequency-time resource unit.One or more or multiple users can be assigned to that one or more
Nonoverlapping frequency-time resource unit, and/or be able to carry out transmitting and/or receive (such as simultaneously).Subchannel can be determined
Justice is into the fundamental frequency resource unit that STA can be distributed to by AP.For example, it is contemplated that back compatible 802.11n/ac need
Ask, subchannel can be defined as 20MHz channels.These subchannels can have the bandwidth less than 20MHz, and/or can be by it
It is restricted to 20MHz bandwidth.
Technology in COBRA can be included as the multi-carrier modulation on transmission and encoding scheme basis, filtering, time domain, frequency
Domain, spatial domain and/or polarizing field.COBRA schemes one or more can be realized using following：OFDMA sub-channelizings, SC-
FDMA sub-channelizings and/or filter bank multi-carrier sub-channelizing.Following one or more features can be transmitted with COBRA and tied
Close and use：Coverage extension method, user packet method, channel access method, the preamble design for low overhead, wave beam
Shaping and/or detection method, frequency and/or time synchronization method and/or chain circuit self-adaptive method.
It has been discussed herein with multi-user and/or single user multiple parallel (MU-PCA) channel access scheme.Used with pair
The COBRA and/or multi-user/single user parallel channel access for claiming transmitting/reception of bandwidth can include following one or more
：Downlink parallel channel access for multiple/unique user, the up-link for multiple/unique user are believed parallel
Road access, for multiple/unique user combination downlink and up-link parallel channel access, support to be used for SU-PCA
And/or COBRA the MCS such as not and/or not etc. the design of transimission power, for support to have used the transmission with symmetric bandwidth/
The PHY designs of the multi-user of reception/single user parallel channel access and/or the MAC/PHY multi-user of process, and/or mixing are simultaneously
Row channel access.MU-PCA discusses the COBRA and/or multi-user/single user using transmitting/reception with asymmetric bandwidth
Parallel channel accesses, and can include being used for the multi-user/single user for having used transmission/reception with asymmetric bandwidth among these
Downlink, up-link and/or the MAC of the up-link of combination and downlink of parallel channel access are designed and/or mistake
Journey, and/or the multi-user/single user parallel channel access for supporting to have used transmission/reception with asymmetric bandwidth
PHY is designed and/or process.
In the technology of such as scalable channel usage etc, STA can be expanded based on channel and/or portfolio availability
Contract its transmission bandwidth.
By using OFDMA in 802.11, such as expansible channel usage and/or improved space reuse can be allowed
Etc technology.Due to the problem of 802.11 standards are peculiar (such as how being worked for 802.11 standards), these technologies are necessary
It is adapted to work in 802.11.
STA can determine whether channel is available using clear channel assessment (CCA) (CCA) threshold value.STA can measure letter
Energy in road, and/or based on the energy in channel whether beyond CCA threshold values come determine its whether can be used for transmit.The threshold value
Can be fixed and/or dynamic.Figure 2 illustrates energy measuring idle channel process.
The information related to channel availability is probably useful, and the information can be enabled for Overlapping Basic Service Set
(OBSS) the space reuse processing of STA scalable channel usage and/or lifting.Scalable channel usage can allow STA to exist
Transmission bandwidth internal dynamic selection/cancellation (son) channel (such as quality (such as whether channel is busy) based on channel).It can expand
Contracting channel usage is probably the possibility technology for 802.11 systems (for example, 802.11ax) based on OFDMA.Can in order to realize
Scalable channel usage, STA/AP can identify the subchannel being used, and/or can use the information to rightly it is scalable its
Channel width.
For the transmission inside identical BSS, multi-user's Frame switch between STA/AP can realize that available subchannels are selected
Select.For OBSS STA, information and/or technology can be used for enabling scalable channel usage and/or room for improvement reuse.Change
The technology for the space reuse OFDMA transmission entered in OBSS would is that useful.
STA is possible to wake up among OFDMA transmission, and/or is possible to mistakenly determine channel busy or free time.
In the scene that STA wakes up in the transmission between AP and other STA, STA can perform clear channel assessment (CCA) (CCA) before transmission.
Due to STA may not hear OFDMA establish frame (such as OFDMA transmission for) and/or RTS/CTS establish frame (such as
For non-OFDMA transmission), it is thus possible to setting of transmitting continuous time NAV can not be directed to, and/or energy inspection can be performed
Survey clear channel assessment (CCA) (CCA).
For the non-OFDMA transmission not in concealed nodes scene, STA can measure the energy in transmission medium
And/or whether assessment medium is busy.For OFDMA transmission, in non-concealed node scene, the son heard once in a while is believed
Energy in road is also possible to be less than CCA threshold values, consequently, it is possible to which STA is possible to assume that the channel is empty.Such case has
It may transmit in the case that holding transmits identical power spectral density with non-OFDMA during the transmission and occur in OFDMA.And this
The probability clashed during up-link OFDMA is transmitted may be increased.This is shown in figure 3, wherein aobvious
The CCA in UL-OFDMA is shown.The non-OFDMA transmission energies that Fig. 3 has used the square frame 301 being filled to show on STA5 exceed
Threshold value, and square frame 302 and 303 rather than 304,305 is filled to show that the OFDMA transmission energies on STA5 are not super with energy level
Go out CCA threshold values.Especially, non-OFDMA transmission can be OBSS transmission.As shown in figure 3, compared with OFDMA is transmitted, for non-
The CCA threshold values of OFDMA transmission are of a relatively high.In some scenes, CCA threshold values can be used (such as being used by AP), thus be had
Higher possibility (such as can be easier to obtain) in one or more subchannels and/or is less likely (such as being more difficult to obtain)
OBSS space reuses are performed in other one or more subchannels.Here technology can be used to ensure that STA can be present
OFDMA performs clear channel assessment (CCA) in the case of transmitting.
Fig. 3, Fig. 5, Fig. 8, Fig. 9, Figure 11 A, Figure 11 B, Figure 15 and/or Figure 20 and/or one or more other accompanying drawings with
And used in entire disclosure STA labels, AP labels, BS labels, SC labels, address tag, field label, BSS labels,
CH/ channel labels, subchannel/subband label and/or resource unit label etc. and/or numbering etc. be for illustrate and/or
The independent label of example purpose, and do not mean that and pass on any restrictions and/or accumulation content.For example, in certain figures
STA1, STA2, CH1 and/or BS1 be understood that into be for illustration and/or illustrate it is described it is one or more it is specific generally
First station, second station, the first channel and/or the first base station read.
Fig. 4 shows WLAN (WLAN) equipment of illustration.One or more features described herein can use one
Individual or multiple equipment is implemented.WLAN can include but is not limited to access point (AP) 102, stand (STA) 110 and/or STA
112.STA 110 and 112 can be associated with AP 102.Especially, WLAN can be configured to implement the communication marks of IEEE 802.11
Accurate one or more agreements, can include channel access scheme, such as DSSS, OFDM, OFDMA etc. among these.WLAN can
To be worked in such as pattern of infrastructure mode, self-organizing mode etc..
The WLAN to be worked in infrastructure mode can include one to be communicated with one or more associated STA
Individual or multiple AP.The AP and/or STA associated with AP (one or more) can include Basic Service Set (BSS).Citing comes
Say, AP 102, STA 110 and/or STA112 can include BSS 122.Extended service set (ESS) can include one or more
One or more STA associated AP (there are one or more BSS) and/or AP.AP can access and/or be docked to distribution
System (DS) 116, wherein the system can be wiredly and/or wirelessly, and the portfolio for being to and from AP can be transported.
The STA gone to outside WLAN in WLAN portfolio can be received on AP in WLAN, and the AP can be by the business
Amount is sent to the STA in WLAN.Business from the destination (such as going to server 118) outside STA to the WLAN in WLAN
Amount may be sent to that the AP in WLAN, and the portfolio can be sent to destination by the AP, such as be sent to via DS 116
Network 114, to send it to server 118.The portfolio between STA inside WLAN can pass through one or more AP
To send.For example, source STA (such as STA 110) can have the portfolio for destination STA (such as STA 112).
Portfolio can be sent to AP 102 by STA 110, and/or portfolio can be sent to STA 112 by AP 102.
WLAN can be operated in self-organizing mode.Self-organizing mode WLAN is referred to alternatively as independent basic service set
(IBBS).In self-organizing mode WLAN, STA may communicate directly with each other (for example, STA 110 can be led to STA 112
Letter, and this communication by AP without being route).
The equipment of such as equipment of IEEE 802.11 (such as IEEE 802.11AP in BSS) etc can use beacon frame
To declare the presence of wlan network.AP (such as AP 102) can upload mark of delivering letters in channel, as an example, the channel can be
Fixed channel, such as main channel.STA can be connected using channel (such as main channel) to be established with AP.
One or more STA and/or one or more AP can use the Carrier Sense Multiple Access with conflict avoidance
(CSMA/CA) Channel Access Mechanism.In CSMA/CA, STA and/or AP can sense main channel.For example, if STA will
Send data, then STA can sense main channel.If it is busy to sense main channel, then STA can retract.As an example,
WLAN and/or one part can be configured to cause at the appointed time (such as specify BSS in) there is a STA to perform biography
It is defeated.Channel access can include RTS and/or CTS signalings.For example, request transmission (RTS) Frame switch can be by transmission equipment
Transmission, and/or clear to send (CTS) frame can be sent by receiving device.If as an example, AP will to STA send data,
So AP can send RTS frames to STA.If STA is ready to receive data, then STA can be responded with CTS frames.
The CTS frames can include alerting other STA postpone accessing while the AP for initiating RTS transmits its data the medium when
Between be worth.Once receiving the CTS frames from STA, then AP can send data to the STA.
Equipment can retain frequency spectrum by network allocation vector (NAV) field.For example, in the frames of IEEE 802.11
In, NAV fields can be used for channel retaining a period of time.NAV can be arranged to its estimated use by wanting the STA of transmission data
The time of the channel.When STA sets NAV, the NAV can be set for associated WLAN and/or its subset (such as BSS)
Put.NAV can be counted down toward zero by other STA.When counter reaches null value, NAV functions can indicate to other described STA
The channel is currently available.
Equipment (such as AP and/or STA) in WLAN can include following one or more：Processor, memory, nothing
Line electricity receiver and/or transmitter (as an example, they may be incorporated among transceiver), one or more antenna (examples
Antenna 106 in such as Fig. 3).Processor function can include one or more processors.For example, processor can include
Following one or more：General processor, application specific processor (such as BBP, mac processor etc.), data signal
Processor (DSP), application specific integrated circuit (ASIC), field programmable gate array (FPGA) circuit, other are any kind of integrated
Circuit (IC), and/or state machine etc..One or more of processors both can be with mutually integrated, can not also be mutually integrated.
Processor (such as one or more of processors or its subset) can be with other one or more functions (such as memory
Etc other functions) be integrated.Processor can perform Signal coding, data processing, Power Control, input/output processing,
Modulation, demodulation, and/or other any functions that equipment work in wireless environment (such as Fig. 3 WLAN) can be made.Processor can
It is configured to perform processor executable code (such as instruction), as an example, including software and/or firmware instructions among these.
For example, processor can be configured to perform included in processor (such as containing the chipset of memory and processor) or
Computer-readable instruction on one or more of memory.By performing the instruction, equipment can be promoted to perform this
In the one or more functions that describe.
Equipment can include one or more antennas.The equipment can use multiple-input and multiple-output (MIMO) technology.It is described
One or more antennas can receive radio signal.Processor can receive radio signal, such as via one or more
Antenna receives.One or more antennas can launch radio signal (such as the signal sent based on processor).
The equipment can have memory, and the memory can include one or more for storage program and/or data
Individual equipment, wherein as an example, described program and/or data can be that processor executable code and/or instruction are (such as soft
Part, firmware etc.), electronic data, database and/or other digital informations.Memory can include one or more memories
Unit.One or more memory cells can with other one or more functions (such as comprising other functions in a device,
For example processor) it is integrated.Memory can include read-only storage (ROM) (such as Erasable Programmable Read Only Memory EPROM
(EPROM), Electrically Erasable Read Only Memory (EEPROM) etc.), random access memory (RAM), disk storage be situated between
Matter, optical storage medium, flash memory device and/or other non-transitory computer-readable mediums for storage information.Memory
It may be coupled to processor.Processor can be communicated with one or more memory entities, such as be entered via system bus
Row communication, directly carry out communicating etc..
Several channel measurements and/or corresponding request and/or response mechanism can be defined herein.Passed for OFDMA
For defeated, systematic function can be optimized by obtaining the more information operated on subchannel.Subchannel measures and/or corresponding
Request/response mechanism and/or process be not defined also.The UL-OFDMA from STA1 and STA2 to AP is happens is that in Figure 5
Transmission.In the case of using previous CCA processes, non-OBSS STA5 are possible to estimate that the channel is unavailable.For
For STA4,5 and 6, previous CCA may the failure based on the measurement energy that it averages on whole transmission bandwidth.
For non-OBSS STA3 and 4, the energy level for generating less than CCA threshold values can be caused over the whole width by averaging, and/or
Cause to clash in OFDMA ession for telecommunication.For OBSS STA6, according to the energy in subchannel, make even over the whole width
Average can cause to produce the energy level more than CCA threshold values, and/or cause space reuse transmission hindered.For in OFDMA schemes
In enable the technology of appropriate clear channel assessment (CCA) and would be beneficial for preventing these problems.
Method, system and/or equipment described herein can improve the weight of the space in OBSS using dominant signaling information
With, and/or inside BSS OFMDA transmission in reduce concealed nodes.The processing can be solved to the letter about channel availability
The demand of breath, the information about channel availability can be directed to OBSS STA and/or local concealed nodes enable scalable channel
With and/or room for promotion reuse.For these systems, equipment and/or method, on son letter used in different STA
The information in road can be noticed having to explicitly with signal.So doing can identify OBSS STA is available for it to use (such as while using)
Subchannel.OFDMA transmission can occur in main BSS, and/or there may exist and the adjacent and/or again of OBSS transmission occurs
Folded BSS.
AP may decide which frequency band is used in space reuse pattern.AP/STA is received and can resisted with robust (robust)
Interference.AP can be sent to be believed for showing that the subchannel for distributing to the AP is available for OBSS STA to be used for the control of space reuse
Breath.Example on the STA of this " robust is to anti-interference " can include following one or more：Away from any possible
The STA (such as positioned at BSS immediate vicinities rather than close to BSS edges) of OBSS transmission and/or interference beyond BSS can be offset
STA (such as having used the STA of advanced interference suppressing receiver).AP can send the space on respective sub-channel/subband
The information of reuse, such as the customizing messages based on subchannel/subband.Information on space reuse can correspond to one
Or multiple particular sub-bands can be used for the possibility of space reuse (such as OBSS space reuses).For one or more or
For each corresponding subchannel/subband, the information on OBSS space reuses of respective sub-channel/subband can be similar
It is and/or different.For example, AP can be able to be that OBSS space reuses connect by one or more subchannels/subband instruction
The similar and/or different level of interference/threshold value received.In some scenes, the interference threshold/grade can be used (such as
By AP uses) so that OBSS space reuses more likely carried out in one or more subchannels (such as be easier obtain) and/
Or it is less likely to carry out (such as being more difficult to obtain) in other one or more subchannels.For example, in one or more
In subchannel, the receptible interference threshold/grade of OBSS space reuses institute is possible to relatively low (such as to receive less dry
Disturb).As an example, in other one or more subchannels, the receptible interference threshold/grade of OBSS space reuses institute has can
Can meeting higher (such as higher interference can be received).
Can be because channel conditions and/or coming from other STA continually changing interference and changing to jamproof robustness.
Robustness can be estimated as " long-term ", wherein change can be averaged and/or will follow the trail of long-term action, or the robustness also may be used
To be estimated as " short-term ", this will make assessment (such as instant etc.) to robustness.Especially, AP can be secondary from retransmitting
Number, the conflict number estimated during STA transmission is gone to and/or relative to overlapping BSS STA geographical position (such as positioned at
The STA at BSS edges is compared to the STA positioned at BSS centers) etc information in collect this knowledge.The information can be by one
It is or multiple or each STA is dominant to be fed to AP.These embodiments can be used for unicast transmission, and/or not be used in wide
Broadcast and/or multicast transmission.
In downlink transmission, robust can send (and/or being sent by other node) to jamproof STA to OBSS
For indicating that it can resist the information for the space reuse transmission that OBSS STA are implemented with robust.
In an uplink transmission, robust can also be to STA that is anti-interference and/or causing very little to disturb to other OBSS
OBSS sends (and/or being sent by other node) and is used to indicate that it can be resisted the space reuse that OBSS STA are implemented with robust and passed
Defeated information, thus facilitates space reuse to transmit.(such as close to BSS centers rather than leaned on away from any possible OBSS transmission
Nearly BSS edges) STA can other OBSS be transmitted with the interference that cause very little.The scene of transmitting power control is being performed by STA
In, this processing is very helpful.To perform the STA of transmission its reception processing robust can be made to resist OBSS using low MCS
Interference.
Be transferred to neighbor bss S information can include it is following one or more：For indicating to be available for OBSS STA to use
The information of particular sub-channel and/or the additional information of the STA on being assigned to one or more or each sub-channels.With
It is available for the information for the particular sub-channel that OBSS STA use to include in instruction following one or more.The information can adopt
With bit map form, wherein one or more or each bit show subchannel whether by robust to jamproof STA/AP
Used.The information can use bit map form, and wherein one or more or each bit shows to transmit in the OFDMA
During whether without schedules sub-channels (such as empty subchannel).Information may map to sub-channel availability probability.Currently
It can be assessed as by the availability of the STA subchannels used with STA to what its reception robustness in these subchannels was done
Basis.STA can perform measurement on one or more or each sub-channels, and/or need not be in the subchannel that STA is used
It is upper to perform measurement.STA can report that last height used on it is believed to OBSS nodes (such as only to OBSS nodes)
Road (such as transmitted by its last time in the subchannel, and/or last time transmission can be data frame and/
Or acknowledgement frame).
As an example, if it is assumed that the bandwidth of subchannel is 2.5MHz and/or transmission bandwidth is 20MHz, then can make
Indicate that OBSS STA can perform transmission in the subchannel with the bit map of 8 bits.In another example, resource point
With can be based on the resource unit of fixed qty.Following parameter configuration can be used in 20MHz transmission bandwidth：Tool
There are the resource unit (RU) of 26 tones of 2 pilot tones, the RU of 52 tones with 4 pilot tones, with 102 data tones
RU plus 4 to 6 pilot tones, and/or 242 tones with 8 pilot tones RU.In this case, used RU parameters
Configure and/or can be indicated by the RU that OBSS STA transmit thereon with the bit map of 11 bits.The first two bit can
With RU groups used in instruction (1,2,3 and/or 4), and ensuing 9 bits may be used to indicate it is one or more or each
Individual RU state.For example, 1,0,1,0 can indicate group of resources 3, wherein first RU is available, and/or second
RU is disabled.OBSS STA can use the information from one or more or multiple neighbor bss S.PBSS STA
It may determine whether to be transmitted in given resource.
The additional information of specific STA on distributing to one or more or each sub-channels can include following one
Item is multinomial.If show that channel can use, then can also send the local AID for the STA that the channel is used, and/or use
It can be used for determining the STA for performing transmission relative to OBSS STA adjacency by OBSS STA in the power for transmitting the information.
There is the information related to being available for the particular sub-channel that OBSS STA are used, OBSS STA being capable of room for improvement reuse
Processing.OBSS STA can use be instructed into " free time " and/or available subchannel.Have with being available for any OBSS STA
And/or it is assigned to the information for the particular sub-channel that the specific STA of one or more or each sub-channels is used, OBSS STA energy
It is enough further to determine space reuse using the identity of the STA and/or available subchannels, thus at room for improvement reuse
Reason.For example, BSS can be by sub-channel identification into the free time.OBSS STA can listen to the transmission from specific STA.
OBSS STA can recognize that the subchannel is for specific OBSS STA and busy.Information described in this paragraph
(such as following one or more) can be transmitted by AP during the scheduling frame for multi-user transmission.In BSS internal schedules
STA can retransmit the information, such as ensuring that OBSS STA can listen to the information.The re-transmission can be in its response
It is piggybacked on frame and sends AP to.Retransmission information can be following one or more：It is (such as only specific on specific STA
STA information) (is, for example, particular sub-channel/subband of its distribution, and/or whether subchannel/the subband is available for space weight
With), on the STA that is dispatched in multi-user transmission information (such as indicating which subchannel can be used for 11 ratios retransmitted
The re-transmission of special bit map, and/or the information of the specific STA on distributing to one or more or each sub-channels
Retransmit)；And/or the information of the STA subsets on being dispatched in multi-user transmission (such as resends the STA of processing with performing
Scheduled STA within specific path loss distance).
In one or more technologies described here, term subchannel and subband can be exchanged and used.
Channel and/or frequency band used herein can include one or more resource units.For example, with 26
In tone RU 20MHz channels, one or more technologies can be realized with the granularity of 26 tones.As an example, in 80MHz
In channel, one or more technologies can be realized with the granularity (or 20MHz granularities) of 242 tones.
One or more technologies can be realized on the 20 mhz channels, or be possible to only realize over such a channel.One
Kind or multiple technologies can be realized with the granularity less than 20MHz.
In one or more technologies, UL-OFDMA-STA can be the biography that AP is performed in transmitting procedure and/or main BSS
Defeated targeted STA.In one or more technologies, UL-OFDMA STA are referred to alternatively as the main BSS STA of UL.
In one or more technologies, OBSS STA can be in overlapping BSS (OBSS) can with or can not with space weight
The STA of transmission is performed with mode, this depends on such as OBSS STA and passed from AP and/or from the relaying SR from UL-OFDMA STA
Heard in defeated (such as transmission on the SR information from AP from UL-OFDMA STA) (such as listening to) what.
The signaling related to the information discussed here can be the special mac frame shown in Fig. 6, and wherein Fig. 6, which is shown, to be carried
The MAC header of OFDMA space reuse information.In figure 6, the OFDMA space reuses 606 in MAC header are extended to reusing
Local AID comprising bit map 602 and/or STA in subchannel field 604.As shown in fig. 7, the information can be in PHY preambles
Noticed in code (SIG-A/SIG-B) with signal, wherein the figure illustrates the PHY preambles with OFDMA space reuse information.
Using in 802.11ax example, Fig. 7 shows the SIG-A words comprising HE-SIGA1, HE-SIGA2 and/or HE-SIGA3 field
702 and/or SIG-B of section fields 704.Information can be placed in either field.The invention is not limited in 802.11ax, and/
Or any appropriate form and/or standard can all use.Mac frame is possible to use excessive processing, and/or can be with
The perform decoding in the same band that emitter uses.PHY preambles be possible to can faster, and/or be all in whole bandwidth can
With decoding.
It has been discussed herein with using the processing of dominant subchannel signaling information in UL OFDMA are transmitted.AP can lead to
Overpolling is one or more or each STA determines whether they will send information, and/or will be by sending UL
OFDMA scheduling/trigger frame (such as the UL based on triggering and/or similar frame) indicates that STA can start to perform transmission.AP can
To send UL OFDMA scheduling/trigger frame to UL OFDMA STA.Scheduled frame can include on following one or more
The information of item：STA, the subchannel for its distribution, and/or the OBSS STA for indicating to be available in neighbor bss S to be dispatched
Perform the bit map of the shared subchannel in space.OBSS STA can decode the information, and/or can be based on available subchannels
To perform the processing, and/or information can be sent in these subchannels (such as only in these subchannels).
UL OFDMA STA can transmit data to AP.The one or more transmitted or each frame can include following
It is one or more：OBSS STA for indicating to be available in neighbor bss S are used for the mapping (example for performing the shared subchannel in space
Such as, STA can retransmit the information on its subchannel (such as being only on its subchannel), rather than on other subchannels
Information), the information of STA on data will be transmitted in UL OFDMA transmission (such as perform transmission in different subchannels
STA local AID), transmission power information, and/or on whole OFDMA transmission the TxOP duration information, on
The information of specific STA data transfer duration, the data to be transmitted.For indicating available subchannels and/or to be passed
The mapping for the data sent can be placed on PHY headers and/or the single polymerization MAC subframes that can be decoded in early days in.
For example, the UL OFDMA STA in the first BSS can receive access point (AP) equipment in the first BSS
Customizing messages.The customizing messages can be used for upper with one or more of the 2nd BSS STA with one or more subbands
The possibility of the related OBSS space reuses (OBSS SR) of line link (UL) transmission is associated.The customizing messages can include with
Each subband in one or more subbands can be used for associated one of the possibility of the OBSS SR transmission related to UL communications
Individual or multiple threshold values.UL OFDMA STA can send to other stations (STA) of one or more of AP and/or the first BSS and wrap
The transmission of at least some customizing messages is contained.The transmission can be by least one STA in one or more of the 2nd BSS STA
Detection (as an example, the transmission is not particular for the STA).For example, UL OFDMA can be served as at least some
The relaying of customizing messages.
OBSS STA in neighbor bss S can intercept AP initial transmission and/or STA weight with regard to the service condition of subchannel
Pass.Subchannel that OBSS STA can be identified as available subchannels in the mapping (such as can transmit/receive and go to/
The STA of adjacent OBSS interference subchannel is resisted from robust) on transmit data.OBSS STA can be used near it
STA knowledge and/or the information of the specific STA on assigning to one or more or each sub-channels are held to identify at it
The subchannel being unaffected in the case of row transmission.OBSS STA can start CSMA/CA in available subchannel and connect
Enter.In scene of the sub-channel size less than 20MHz, OBSS STA, which can be transmitted, is limited in the subchannel.For son
For transmission, OBSS STA can increase its transimission power, so as in the one or more or all OFDMA symbols transmitted
Equal-wattage is kept on number.In this case, the identification on available subchannels must take in this.The phase transmitted
Adjacent BSS information can include power headroom, and the power headroom indicates admissible adjacent cell transmission power ascension and/or can
It is used for estimating the expectation received power of its admissible transimission power for adjacent S TA.Other nodes can perform idle channel
This energy variation in channel is taken in when evaluation.Once be successfully received the data transmitted in main BSS, then one
Individual or multiple or each STA can send ACK to AP.The ACK can be sent simultaneously.
Fig. 8-10 shows the Illustrative Network with OBSS neighbours and/or up-link OFDMA transmission, and shows bag
Transmitted in scene containing the following：(a) reuse information on one or more or all subchannels can be by one or more
Or each STA is sent to adjacent BSS, and/or (b) on particular sub-channel reuse information can by one or more or
It is that each STA retransmits to neighbor bss S.Fig. 8 describes the dominant letter of the improved space reuse in being transmitted for UL OFDMA
Make the example of process：On one or more all subchannels reuse information can by it is one or more or each
STA is retransmitted.As shown in figure 8, BS1 contains STA1, STA2, STA3 and/or STA4.In the figure, the instruction of circle 802 is
BS1 logical boundary.The instruction of circle 802,804,806,807 is to be transmitted based on STA transimission power by from STA
Region around the one or more of influence or each STA region.It can be seen in fig. 8 that circular 802,804,806 meetings
It is overlapping in BS1AP 808.And as indicated, BS2 includes BS2, STA1 and/or BS2AP.In fig. 8, the instruction of circle 810 is
BS2STA1 CCA threshold ranges.When circle 801 intersects with BS1STA1, BS1STA3 and/or BS1STA4, at this moment can prevent
OBSS STA perform transmission.By using dominant signaling, BS2STA1 can be made to perform transmission in specific subchannel.Fig. 9 is to use
The example of the dominant signaling procedure of modified space reuse processing in UL OFDMA transmission, which show one or
The reuse information for one or more or whole subchannels that multiple or each STA is retransmitted.Figure 10 is described for UL OFDMA
The example of the dominant signaling procedure of modified space reuse processing in transmission, which show one or more or each
The reuse information for the particular sub-channel that individual STA is retransmitted.The information can be in OFDMA TxOP at one or more of OFDMA transmission
Transmitted on individual frame or all frames.The information transmitted can also be possible to omit and be assigned to STA in local concealed nodes
Used in the scene of scheduling/trigger frame of UL-OFDMA transmission.One or more or each STA can its preamble/
Transmitted in MAC header for indicating the generation of UL-OFDMA transmission and/or the information of overall transfer bandwidth.Locally hiding node
The information can be decoded, and as an example, it can prevent to conflict accordingly.
In figure 9 and in figure 10, dominant signaling is to be indicated by preamble 902,904,1002,1004 (in OFDMA TxOP
On one or more or all frames of middle transmission).Frame 906,908,1006,1008 is that the OFDMA that is used to dispatch sent by AP is passed
OFDMA control frames defeated and/or that Successful transmissions are responded.AP can send the space weight on respective sub-channel/subband
With information, such as the customizing messages on OBSS space reuses based on subchannel/subband.For one or more or
For each corresponding subchannel/subband, the OBSS space reuses information on respective sub-channel/subband can be similar
It is and/or different.Space reuse information can correspond to one or more particular sub-bands space reuse (such as OBSS spaces weight
With) possibility.Frame 910,1010 is OFDMA frames of the STA to the AP transmission in main BSS, and frame 912,1012 is one or more
Data of the individual OBSS STA based on the space reuse information transmission sent in neighbor bss S preamble.
The clear channel assessment (CCA) (CCA) based on OFDMA is described herein.It is described herein static and is dynamically based on
OFDMA CCA threshold values are set.Example can include following one or more scenes.AP and/or STA can be noticed with signal
It performs the ability of (a) OFDMA transmission and/or (b) subchannel CCA estimations.Node can arrange their signal transmission bandwidth
And/or corresponding CCA threshold values.Signal bandwidth value can be 20MHz, 40MHz ... 160MHz, and/or 80+80MHz.The processing
Can the parameter based on used 802.11 technology.The value of CCA threshold values can be set based on fixed value and/or dynamic value
It is fixed.AP can send the space reuse information of respective sub-channel/subband, such as the customizing messages based on subchannel/subband.
Space reuse information can correspond to space reuse (such as OBSS space reuses) possibility for particular sub-band.For one
Or for multiple or each corresponding subchannel/subband, the OBSS space reuses information of respective sub-channel/subband can be phase
It is seemingly and/or different.For example, can indicate can be by clear channel assessment and/or the OBSS of one or more subchannel/subbands by AP
Similar and/or different CCA threshold values/grade that space reuse is received.
Fixed CCA values：For HE STA of the working channel bandwidth equal to 20MHz, receive level and be equal to or more than
The beginning of the effective 20MHz HE signals of lowest modulation and/or code rate sensitivity given by CCA_STA (dBm) may
The probability for causing PHY to be arranged to PHY-CCA.indicate (BUSY) within 4 μ s is more than 90%.Receiver can be in 20MHz
Channel in for signal energy detect surplus (dB) and/or higher than lowest modulation and/or code rate sensitivity (such as (CCA_
STA+Energy_detect_margin (dBm)) signal keep CCA signals busy (IEEE Std 802.11TM-2012:
Wireless LAN Medium Access Control(MAC)and/or Physical Layer(PHY)
Specifications 20.3.21.5.2).It can be in 20MHz channels not support the receiver for receiving the PPDU of HE forms
And receive any effectively HE signal of the level equal to or more than (CCA_STA+non-HE_margin) (dBm) and keep CCA signals numerous
Busy (PHY_CCA.indicate (BUSY)).
Dynamic CCA values：For HE STA of the working channel bandwidth equal to 20MHz, receive level and be equal to or more than
Specific surpluses of STA given by CCA_STA (dBm)=CCA_nominal-STA_specific_margin (dBm) it is effective
The beginning of 20MHz HE signals can cause PHY to be more than PHY-CCA.indicate (BUSY) probability being arranged within 4 μ s
90%.Receiver can be that any size is x dB and/or kept beyond lowest modulation and/or the signal of code rate sensitivity
CCA signals are busy, and wherein x is STA specific values.It can be to believe in 20MHz not support the receiver for receiving the PPDU of HE forms
Road and level is received equal to or more than (CCA_nominal+non-HE_margin-STA_specific_margin (dBm))
Any effective HE signals keep CCA signals busy (PHY_CCA.indicate (BUSY)).The special surpluses of STA can be based on road
Footpath is lost and/or transmission power is set.The special surpluses of the STA can be configured to ensure that the STA closer to BSS centers can have
Have higher CCA surpluses (for example, they be possible in terms of vacant channels are determined can be more radical because they influence it is adjacent
The probability of BSS transmission is relatively low).Either statically and/or dynamically threshold value, the threshold value can be based on subchannels one by one come really
Fixed (such as being determined by AP).For one or more subchannels, these threshold values can be identical or different.
Node can reach an agreement on its signal sub-channel size and/or CCA_sub_level_threshold.Subchannel bandwidth
Value can be predetermined (such as being predefined by standard) and/or be set dynamically.The subchannel can be 20MHz,
5MHz and/or 2.5MHz subchannel.Subchannel and/or resource unit bandwidth can be as agreed parameter configuration determine.
In one example, it is used can be following 20MHz transmission bandwidth in parameter configuration：26 with 2 pilot tones
The resource unit (RU9) of individual tone, the RU4 of 52 tones with 4 pilot tones, 102 data tones add 4 to 6 pilot tones
RU2, and/or 242 tones with 8 pilot tones RU1.Subchannel CCA grades can be fixed and/or according to STA
Dynamic setting, and/or can depend on selected sub-channel size, for transmission bandwidth set CCA_threshold (with
It is the same in 1.b) and/or transimission power pattern.OFDMA subchannels punishment OFDMA_sub_penalty can be set, wherein described
Setting can depend on OFDMA sub-channel sizes.The punishment can be calculated as the 10*log10 (number of subchannels in 20MHz
Amount) dB.Illustration has been carried out to this in table 1：
Table 1：Example on the punishment of OFDMA subchannels
As shown in table 2, OFDMA subchannels punishment OFDMA_sub_penalty can be set, and/or can depend on
OFDMA RU sizes：
Table 2：Example on OFDMA subchannels/RU quantity punishment
TP_mode_margin can be added.Power transmission mode can depend in allocated resource unit making
Transmitted with the firm power of overall transmission power (TP_mode_margin=-OFDMA_sub_penalty), and/or always transmit work(
Rate spectrum density keeps constant constant power spectral density transmission.In this case, overall transmission power can be based on allocated money
Source unit and scalable, and/or TP_mode_margin=0.
OFDMA_margin can be configured to allow higher/lower CCA threshold values, such as based on subchannel/subband.
HE STA of the channel width equal to n MHz of work subchannel can be based on Sub_channel_CCA_level
(dBm)=f (CCA_STA (dBm), sub_channel_size_Penalty (dB), transimission power pattern, OFDMA_margin)
(dBm) its sub-channel_CCA_level (subchannel CCA grades) is set.In one example, Sub_channel_
CCA_level (dBm)=CCA_STA (dBm)-Penalty (dB)-OFDMA_margin+TP_mode_margin (dBm) and/
Or if the energy level inside subchannel bandwidth is more than or equal to this value, then be possible to that PHY can be caused to set PHY-
Probability of the CCA.sub_channel_indicate (BUSY) within 4 μ s is more than 90%.CCA_level_sub_channel
And/or sub-channel size can be pre-estimated and/or set.
(such as exhaustive) subchannel CCA of an illustration is described herein.STA can scan possible OFDMA
Subchannel assignment (such as one or more or all possible OFDMA subchannel assignments).As an example, show in Figure 11 A
The possible parameter configuration for the 802.11ax transmission in 20MHz is gone out.The CCA threshold values that can be performed are 16 more altogether
It is individual, contain among these following one or more：Nine comparison (letters in Figure 11 A for the RU9 with 26 tone RU
Road 1-9)；For with 52 tone RU plus 26 tone RU RU5 4 comparisons (as an example, the RU of 26 tones by
Compare) (the channel 10-13 in Figure 11 A)；For two ratios with 102 data tones plus 26 tone RU RU3
Compared with (channel 14 and/or 15 in Figure 11 A)；And/or the comparison (channel 16 in Figure 11 A) for 242 tone RU.Channel
16 comparison and previous CCA threshold measurements and/or more similar.It can be performed in analog domain one or more or each
Performed based on individual energy measurement, such as the time domain energy measurement for having isolated expected frequency execution afterwards by wave filter.In number
One or more or each energy measurement can be performed in word domain, such as after FFT processing is performed to reception signal
Perform.As it was earlier mentioned, it is expected that the energy in tone can be measured and/or compared with threshold value.Figure 11 B are to have used channel 1-
14 another example.
For CCA, it can be assumed that transmission bandwidth { CCA_tx } with corresponding CCA threshold values and/or with one or
One or more subchannel bandwidths { CCA_sub_tx } of multiple corresponding CCA threshold values.If the energy in channel is without departing from threshold
Value, then the PHY_CCA.indication for being used for transmission bandwidth { CCA_tx } can be arranged to 0.Doing so may insure that Gu
And old STA.If the energy in channel exceeds CCA threshold values, then will can continue in transmission bandwidth { CCA_tx } and/or frame
The PHY_CCA.indication of time (d) is arranged to 1.For the CCA processes based on subchannel, subchannel CCA
Estimation can be activated.The energy of one or more or each sub-channels can be measured.For one or more or each
For sub-channels, if the energy in subchannel is not above CCA_level_sub_channel threshold values, then will can use
It is arranged to 0 in the PHY_CCA.sub-channel_indication of subchannel bandwidth { CCA_sub_tx }.If in subchannel
Energy exceed CCA_level_sub_channel threshold values, then can be by sub-channel size { CCA_sub_tx } PHY_
CCA.sub-channel_indication is arranged to 1.Figure 12 illustrates a kind of technology of illustration.
The simplified CCA based on subchannel can be provided herein.One or more or each STA can be scanned
CCA compares processing (for example, 9 one or more or all CCA compare, it is assumed that be 26 tone RU distribution).With the method for exhaustion
Compare, complexity can be reduced by so doing.Used CCA threshold values assume that energy transmits over the whole width.I.e.
Make to be that channel can also be identified as being busy in the scene of a RU distribution.For the CCA mistakes based on subchannel
For journey, subchannel CCA estimations will be activated.The energy of one or more or each sub-channels can be measured.For one
For individual or multiple or each sub-channels, if the energy in subchannel is without departing from CCA_level_sub_channel
Threshold value, then the PHY_CCA.sub-channel_indication of subchannel bandwidth { CCA_sub_tx } can be arranged to 0.
If the energy in subchannel is beyond CCA_level_sub_channel threshold values, then can be by sub-channel size { CCA_
Sub_tx } PHY_CCA.sub-channel_indication be arranged to 1.Figure 13 shows an exemplary techniques.
System, equipment and/or method described herein can include the CCA processes based on layering subchannel.It may go out
In existing scene, STA is possible to can be by channel identification into busy, and/or does not identify any be not used by and/or local quilt
The scene of the channel used.This can occur in situations where：For non-OBSS STA, it is possible to attempt to identify
Go out and whether there is any transmission in channel, to prevent local concealed nodes.This can also occur under scenario described below：It is right
For non-OBSS STA, it is possible to wake up in transmitting procedure.STA can initiate it is following handle, wherein the processing
It can include following one or more.CCA is performed on RU1 by using RU1 threshold values.If channel busy, it indicates that
Channel_busy and/or end.If channel is not busy, CCA is performed on RU2.If channel busy, it indicates that channel
Busy and/or end.If channel is not busy, CCA is performed on RU4.If channel busy, it indicates that channel busy and/
Or terminate.If channel is not busy, CCA is performed on RU9.If channel busy, it indicates that channel busy and/or end.
Indicate that channel is not busy.Figure 14 A and 14B show a kind of technology of illustration.
System, equipment and/or method described herein can include busy subchannel and/or designator is lost
(indicator-tine) method and/or system.For indicating that the indicator channel set for being likely to occur OFDMA transmission can quilt
Use.For this purpose, untapped set of tones can be allocated.One of RU9 tones can be used for the mesh (as shown in Figure 11 A)
's.Figure 11 A show the parameter configuration (being, for example, the parameter configuration that 802.11ax is proposed) of illustration.In Figure 11 A, lines 1102
What is indicated is tone that is unassigned and/or being not used by.Figure 11 B are the parameter configurations that another is illustrated.It is black in Figure 11 B
What line 1104 indicated is tone that is unassigned and/or being not used by.In order to help to recognize whether ongoing OFDMA
Energy can be placed in the tone that these are not used by by transmission, any STA for performing transmission.Energy can be placed on center
26 tone RU9 subchannels on because the subchannel is common to one or more or all OFDMA subchannel distributions
's.The energy transmitted in these tones can be adjusted based on the quantity for the STA for performing transmission simultaneously by performing the STA of transmission.
Doing so may insure that the energy received on the receiver will not crush AGC.It is expected that the STA for performing transmission can check specific sound
Adjust and/or identify and whether there is energy on this channel.The processing can be based on total energy and one in designator tone
The comparison that individual threshold value is done.The processing can by by the energy in designator tone compared with the energy in other tones relatively come
Complete.In one scenario, if it is indicated that the energy in symbol tone is obviously improved compared with other designator tones, then should
Scene, which may indicate that, has OFDMA transmission.The illustration parameter configuration with designator tone is shown in fig.15.In Figure 15
What one or more or each square frame represented is subchannel.1502 be unassigned tone and/or they are used as
Indicator channel.One or more or each other square frame numbering 1-16 can be subchannel and/or resource unit.It is any
OFDMA transmission can include the energy in designator tone locations 1502.
In figure 16, STA can be distributed to perform transmission using 52 tone RU, and/or transmit energy in designator tone
Amount.1602 in Figure 16 subchannels for being allocated to STA and/or transmission being performed for the STA represented.Close to the STA
STA can measure gross energy in indicator channel and/or by it compared with threshold value.Indicator channel and/or non-finger
Show that the capacity volume variance between symbol channel can be measured.Significant difference can indicate to have used OFDMA transmission.Such as Figure 17 example
Shown, STA1 and STA2 are close to each other, and STA3 is then located at the opposite end of network.Subchannel distribution and instruction are shown in figure 18
Accord with channel.In figure 18, square frame 1802,1804,1806 and/or 1808 indicate distribute to it is one or more or each
STA and/or the subchannel transmitted for its execution.52 tone subchannels 1802 are assigned in STA1, and STA2 is assigned 52
26 tone subchannels 1806 and/or 104 tone subchannels 1808 are assigned in tone subchannel 1804, and STA3.STA4 can
To receive signal as shown in figure 19.One or more or each STA can send designator tone 1810,1812,1814, its
Described in designator tone can be each tone gross energy 1/3rd.In Figure 19, square frame 902,1904 indicates
The energy 1904 that STA4 receives from the STA1 energy 1902 received and from STA2.Secret note 1906 is indicated in indicator channel
In the energy summation that is received from STA1 and/or STA2.STA1 can perform preceding CCA processes in whole transmission bandwidth.Make
For example, this processing is possible to because not detecting energy in other subbands and failure.STA1 can measure one or
Multiple or each indicator channel and/or the energy of subchannel：
Subchannel 1>0, indicator channel>0；
Subchannel 2>0, indicator channel>0；
Subchannel 3=0, indicator channel>0；
Subchannel 4=0, indicator channel>0；And/or
Subchannel 5=0
The energy in Energy distribution and/or indicator channel in subchannel can indicate to carry out OFMDA transmission.
Described system, equipment and/or method can include the use of the transmission of the CCA methods based on OFDMA, and/
Or the system of the space reuse in being transmitted for OBSS OFDMA.Information on subchannel used in different STA can be by
One or more or each OBSS STA estimations.The processing can be based on modified CCA processes, so that OBSS
STA can identify the frequency band for being available for it to reuse.The difference of the processing and above-mentioned processing is：Can quilt on which subchannel
The information of reuse is dominant transmission.Once receive OFDMA scheduling/trigger frame, data transmission frames and/or OFDMA data wheels
Frame is ask, OBSS STA can initiate to be layered CCA mechanism, and the mechanism can be estimated in one or more or each sub-channels
Energy, and/or can estimate whether subchannel can be used for transmitting based on the CCA threshold values for considering sub-channel size.
Described system, apparatus and method, which can include having, allows space reuse (such as one or more or all
Subchannel) one or more or each sub-channels transmission., can be by one or more or all sons in OBSS STA
Channel is used for space reuse.The process may be used in the UL-OFDMA transmission of the CCA threshold mechanisms based on OFDMA.In master
In BSS, AP can send UL OFDMA scheduling frames to UL OFDMA STA.The scheduling frame can be included on to be dispatched
STA and/or the information for its subchannel distributed.UL OFDMA STA can transmit data to AP.One or more transmitted
Individual or each frame can include the UL OFDMA data on one or more or each STA.OBSS STA can be detectd
Hear AP original transmitted and/or STA re-transmission.OBSS STA can be on the STA for adding BSS and/or it is determined that its is adjacent
Occur to initiate the PHY_CCA.indication based on OFDMA indicated by BSS as described above when OFDMA transmission in BSS
Process (such as when OFDMA scheduling and/or trigger frame is listened to).OBSS STA can identify from the transmission being listened
The subchannel of unusual robust for OBSS transmission.OBSS STA can initiate the PHY_ based on OFDMA as described above
CCA.indication processes.PHY_CCA.sub-channel_indication can be configured to 0.Back off procedure in OBSS
It can be activated.If subchannel can be accessed after retracting, then can be PHY_CCA.sub-channel_indication
=0 available subchannels enable transmitting procedure.If PHY_CCA.sub-channel_indication is configured to 1, then
Subchannel will not be used.OBSS STA can perform transmission in the available subchannels of robust.It is less than in sub-channel size
In 20MHz scene, OBSS STA, which can be transmitted, to be limited in the subchannel.It is less than 20MHz field in sub-channel size
Jing Zhong, OBSS STA, which can be transmitted, to be limited in the subchannel.Once the data transmitted in main BSS are successfully received, that
STA can send ACK to AP.It should be noted that ACK can be sent simultaneously.This skill is shown in Figure 20-21
Art.
In fig. 20, circle 2002 indicates BSS1 logical boundary, and circular 2004,2006,2008,2010 indicate
Be the transimission power based on STA and by being transmitted area around the one or more influenceed or each STA from the STA
Domain.In fig. 20 as can be seen that these circles can be overlapping in BS1AP, thus estimated BS1AP would is that up-link OFDMA is passed
Defeated receiver.And as indicated, BS2 includes BS2, STA1 and BS2AP.In fig. 20, the instruction of circle 2012 is to be used for
BS2STA1 CCA threshold ranges.Because this circle can intersect with BS1STA1, BS1STA3 and BS1STA4, therefore can be with
Prevent OBSS STA from performing transmission when the CCA on measuring transmission bandwidth.In figure 21, frame 2102,2104 is shown
The OFDMA scheduling and/or acknowledgement frame that AP in BSS1 is sent, and frame 2106 then shows the data transmission frames from STA to AP.It is logical
Cross using modified CCA, BSS2, STA1 can identify that subchannel 1,3 and/or 4 are busy 2108, and/or 2010
Data are transmitted in subchannel.
Described system, equipment and/or method can be included with the OFDMA subsets of sub-channels for allowing space reuse
Transmission.It can be in frequency reuse that neighbor bss S, which can use OFDMA to transmit and/or can be sent to OBSS STA for instruction,
Aspect has the information that the STA of robustness dispatches the subsets of sub-channels (such as only dispatching the subsets of sub-channels).Based on OFDMA
CCA processes can be performed in indicated subsets of sub-channels (such as only in the subsets of sub-channels).Procedure below can be with
Following any one is used according to any logical order.BSS can be by consulting to specify some subchannels therebetween
Handled into frequency reuse can be used for during OFDMA is transmitted.The negotiation can make neighbor bss S be designated as can be used for by orthogonal sub-channels
Frequency reuse.OBSS STA, one or more or all subchannels can be used for space reuse.Procedure below can patrol according to any
Order is collected to be used to following any one use the OFDMA of the CCA threshold mechanisms based on OFDMA to transmit.In main BSS
In, AP can send UL OFDMA scheduling frames to UL OFDMA STA.The scheduling frame can be included on the STA to be dispatched
And/or the information of the subchannel for its distribution.UL OFDMA STA can transmit data to AP.Transmitted one or more or
Each frame can include one or more or each STA UL OFDMA data.
In one or more technologies, the concept of entitled frequency reuse can be considered as and space reuse described herein (SR)
Concept is substantially similar.
OBSS STA can intercept AP original transmitted and/or STA re-transmission.OBSS STA can be the one of BSS instructions
Individual or multiple or institute's having time in its determination neighbor bss S when STA adds BSS and/or when carrying out OFDMA transmission
(such as when it listens to OFDMA scheduling and/or trigger frame) initiates the CCA processes based on OFDMA as described above.
OBSS STA can be identified from the transmission intercepted for subchannel of the OBSS transmission with robustness.OBSS STA can be with
By the process be confined to by main BSS with open arms (friendly) instruction into frequency reuse subchannel.OBSS STA can be initiated
PHY_CCA.indication processes based on OFDMA as described above.If PHY_CCA.sub-channel_
Indication is configured to 0 (such as in the case of subchannel is available), then the rollback for being possible to start in OBSS
Journey.If can retract after access subchannel, then can for PHY_CCA.sub-channel_indication=0 can
Transmitting procedure is enabled with subchannel.If PHY_CCA.sub-channel_indication is configured to 1, then will not make
Use subchannel.OBSS STA (such as only in the subset of these subchannels) can perform biography in the available subchannels of robust
It is defeated.As an example, in scene of the sub-channel size less than 20MHz, OBSS STA, which can be transmitted, is confined to the sub- letter
Road.In scene of the sub-channel size less than 20MHz, OBSS STA, which can be transmitted, is confined to the subchannel.Once
Transmitted data are successfully received in main BSS, then one or more or each STA can send ACK to AP.These
ACK can be sent simultaneously.
Described system, apparatus and method can include the CSMA/CA access priorities for changing OBSS STA.With above-mentioned
The information that mode is collected can be used for the CSMA/CA priority that modification is available for OBSS STA to be used for access medium.Once identify
Be adapted to the subchannel of space reuse, then they can change its CSMA/CA accesses, so as in the subchannel (such as only
In the subchannel) with higher priority and/or on whole transmission channel with higher transmission priority, it is and near
A few transmission is limited in the subchannel/subband (such as only in the subchannel/subband).
As an example, in the scene including two RU, OBSS STA can adjust one or more CSMA/CA transmission ginsengs
Number so that its RU1 (its can have SR abilities and/or be " friendly ") on higher than RU2 (its without SR abilities and/
Or not " close friend ") on priority (such as probability) perform transmission.
Described system, equipment and/or method can include using the CCA mistakes based on OFDMA for the dormancy STA waken up
The transmission of journey.All two STA in main BSS and/or OBSS can follow the process.STA in park mode can
To be waken up during OFDMA is transmitted.In order to determine whether medium is busy, following one can be used according to any logical order
Individual or multiple processes.AP and/or STA can set park mode clear channel assessment (CCA) mistake that account for OFDMA transmission
Journey.The pattern can be configured to default mode and/or can be during association by network settings mark.This pattern is referred to alternatively as
OFDMA park modes.Whether the CCA processes described herein based on OFDMA are determined for channel busy.With sub-channel
It is different to perform exhaustive search, if the PHY CCA.sub-channel indication=1 of x sub-channels, then channel
It is busy.The value of the x can be 1, and/or can be configured to minimize false-alarm (false alarm) probability.AP can be by
Subchannel is distributed according to geographical position.STA can measure the particular subset of subchannel, to determine whether subchannel is busy.Institute
The subchannel to be measured can be advertised to specific STA by AP with signal, and/or can be by one or more or each STA
Dynamic Discovery.In this case, based on the previously described either method in text and for particular sub-channel based on
OFDMA CCA processes can be used for determining whether the channel is busy, and/or can be one or more or each STA real
Apply.It assume that STA is in the north (channel 1), south (channel 3), east (channel 2) and/or west (channel 4) herein)
Up-link OFDMA transmission.It can be required to check channel 3 and/or 4 when waking up positioned at the STA of south-west location.In OFDMA
In transmission, AP can dispatch the STA in the west and/or STA in east in channel 3 and/or 4, so that the STA is held when waking up
The appropriate CCA of row.The STA of wake-up can be required to wait for it listening to new transmission, to start channel access process.So
Doing can prevent STA from interrupting ongoing OFDMA transmission.
Described system, equipment and/or method can include subchannel and measure.Described system, equipment and/or side
Method can include subchannel load measure.STA is possible to suffer from uneven transmission on different subchannels.Come for the STA
Say, some subchannels are possible to more to be used compared with remaining subchannel.Here use can be indicated at its own
BSS and/or OBSS in the transmission that carries out.Its reason can be because around the STA overlapping BSS geometry and/or
Space reuse pattern in OBSS AP subchannel is set.AP can be that one or more or each STA determines different sub- letters
The access priority in road.AP can use the subchannel load information from STA.The subchannel load can be defined as
STA senses the busy percentage of time of medium on one or more or each sub-channels.Measurement is performed for returning
Channel observed by STA can be changed and/or be reused for sub- letter using existing channel load requests/report pairing of measurement
Road load requests/report.AP can send subchannel measurement request frame to STA and/or STA groups.AP can ask described one
Individual or multiple STA reports measure on the subchannel of one or more subchannels.Once receive request, then it is one or more
Individual STA can measure subchannel, and/or can send subchannel measurement report to AP.If AP measures from a STA request,
So STA can be after claim frame be received the xIFS times to AP send measurement report.
For example, if AP sends measurement request to more than one STA, then STA can use following one
Or it is multinomial come to AP send measurement report.STA can transmit measurement report using poll transmission means.AP can be one with poll
STA, and/or the STA being polled can transmit this report.First STA can transmit this report in the case of no poll.
STA can transmit measurement report in succession in order.These frames can be separated by xIFS.As an example, STA can be competing at its
Measurement report is transmitted when striving and/or obtain media.This report may not follow (such as following closely) receive measurement request frame it
Afterwards, and/or it can also be transmitted using delayed mode.STA can use up-link transmission plan (such as UL simultaneously
MU-MIMO, UL OFDMA) transmit measurement report.AP can allow STA in an autonomous manner and/or be reported based on triggering
Subchannel load measure.AP can indicate the condition for being available for STA to send report.STA can observe unbalanced sub- letter at it
Subchannel load report is transmitted when road loads.Unbalanced subchannel load state can be by by different subchannels
The ratio of the load of maximum subchannel and/or the load of minimum subchannel relatively defines compared with specified threshold.The measurement can be
Set period and/or carried out in the period longer than the set period.The measurement on subchannel load requests defined in table 3
The illustration form of request field.
Table 3：Illustration for the measurement request field of subchannel load requests
Whether subchannel instruction with indicative purpose can report one or more or whole subchannels and/or son by STA
The subchannel load of a part/subset of channel.
When the bright report of subchannel dial gauge can be the measurement on subsets of sub-channels (such as only in subchannel
When to indicate the report can be the measurement on subsets of sub-channels), at this moment there will be sub-channel index.The field can refer to
Show the sub-channel index available for subchannel load measure.
Report Type may be used to indicate different Report Types.For report immediately, this value can indicate connecing
Transmission immediately is reported after receiving claim frame.For instant MU reports, this value can indicate that request can be being received
(such as transmitting immediately) report is transmitted after frame, and/or can be transmitted using MU.The field can indicate detailed MU transmission sides
Method, such as OFDMA, MU-MIMO.The report value being triggered can indicate that the report can be transmitted with triggering pattern.For example,
AP can trigger report transmission by sending poll frame.For delay triggering report, this value can indicate the report
Announcement can be transmitted with delayed mode.The report can be before transmission by AP polls and/or triggering.Reported for the MU of delay triggering
For, this value can indicate that report can be transmitted with delayed mode and/or can be transmitted using MU.The field can indicate in detail
MU transmission methods, such as OFDMA, MU-MIMO.For the autonomous report of delay, this value can indicate can be with delay
Mode is reported to transmit.This report before transmission will not be by AP polls and/or triggering.STA can determine to pass under the conditions of some
Send this report.
Reporting conditions may be used to indicate the condition for being available for STA report subchannel loads.Several reports can be specified herein
Announcement condition.For example, can specify herein following one or more：Maximum subchannel load and the load of minimum subchannel
Ratio be more than designated value, the load of maximum subchannel more than designated value, the load of minimum subchannel less than designated value, average subchannel
Load is less than designated value more than designated value, and/or average subchannel load.
Measurement Duration field can indicate to measure duration threshold.Destination STA can be in the duration threshold
Measurement is performed during value, and/or measurement can be performed in the time longer than the duration threshold.The field can use with
Standard identical mode defines.Vendor-specific field is available for manufacturer to use.Reserved field can be then retained.
It is used for the illustration form of the measurement report field of subchannel load report defined in table 4.
Table 4：Illustration form for the measurement report field of subchannel load report
Subchannel instruction can indicate the targeted sub-channel index of the report.This report type can serve to indicate that not
Same Report Type.This report type can be identical with the definition in measurement request field.
Reporting conditions may be used to indicate the condition that STA is designed to report subchannel load.This report condition please with measurement
It can be identical to ask the definition in field.The actual measurement time started can define in a manner of with standard identical.Measurement is held
Continuous time field can define in a manner of with standard identical.
The subchannel that subchannel load can be used for reporting one or more or more sub-channels loads.The field can
With comprising subchannel ID, and/or corresponding subchannel can be followed to load thereafter.Said structure can for reported one or
Multiple or all subchannels repeat to implement.The field can include subchannel load and/or the order (such as subchannel load
To the mapping of sub-channel index) can be preassigned.Manufacturer can use vendor specific fields.Reserved field can be protected
Stay.
Figure 22 A are the diagrams for the exemplary communication system 1600 that can implement disclosed one or more embodiments.As
Example, wireless network (such as including the wireless network of the one or more assemblies of communication system 100) be configured to for
The load-bearing allocation QoS characteristics of (such as beyond walled garden associated with wireless network) are expanded to beyond wireless network.
Communication system 1600 can provide voice, data, video, message transmission, wide for one or more wireless users
The multiple access system of content such as broadcast.The communication system 1600 can by the shared system resource including wireless bandwidth come
Allow the such content of one or more radio subscriber to access.As an example, communication system 1600 can use one or more letters
Road cut-in method, such as CDMA (CDMA), time division multiple acess (TDMA), frequency division multiple access (FDMA), orthogonal FDMA (OFDMA)
And/or Single Carrier Frequency Division Multiple Access (SC-FDMA) etc..
As shown in fig. 22, communication system 1600 can include at least one wireless transmitter/receiver unit (WTRU) (such as
Multiple WTRU, such as WTRU 1602a, 1602b, 1602c and/or 1602d), radio access network (RAN) 1604, core net
Network 1606, PSTN (PSTN) 1608, internet 1610 and other networks 1612, it would be appreciated that institute
Disclosed embodiment contemplates any number of WTRU, base station, network and/or network components.Each WTRU 1602a,
1602b, 1602c, 1602d can be arranged to any kind of equipment for working and/or communicating in wireless environments.Example
Such as, WTRU 1602a, 1602b, 1602c, 1602d may be configured to launch and/or receive wireless signal, and can include
User equipment (UE), movement station, fixation or mobile subscriber unit, pager, cell phone, personal digital assistant (PDA), intelligence
Phone, laptop computer, net book, personal computer, wireless senser and electronic equipment for consumption etc..
Communication system 1600 can also include base station 1614a and base station 1614b.Each base station 1614a, 1614b can be with
It is arranged to by wirelessly promoting access one to fetching with least one in WTRU 1602a, 1602b, 1602c, 1602d
Any kind of equipment of individual or multiple communication networks, the network can be core network 1606, internet 1610 and/or net
Network 1612.As an example, base station 1614a and 1614b can be base transceiver station (BTS), node B, e node B, home (e) node
B, family e nodes B, site controller, access point (AP) and wireless router etc..Although each base station 1614a and
1614b is described as single part, it is contemplated that, base station 1614a and 1614b can include any amount of interconnection
Base station and/or network components.
Base station 1614a can be RAN 1604 part, and the RAN can also include other base stations and/or net
Network part (not shown), such as base station controller (BSC), radio network controller (RNC), via node etc..Base station
1614a and/or base station 1614b can be configured to entitled cell (not shown) specific geographical area internal emission and/or connect
Receive wireless signal.Cell may be logically divided into cell sector.For example, the cell associated with base station 1614a can be divided into three sectors.By
This, in one embodiment, base station 1614a can include three transceivers, that is to say, that each transceiver is corresponding
In a sector of cell.In another embodiment, base station 1614a can use multiple-input and multiple-output (MIMO) technology, and
And it is possible thereby to use one or more transceivers for each sector of cell.
Base station 1614a, 1614b can by air interface 1616 come with one or more WTRU1602a, 1602b,
1602c and 1602d are communicated, and the air interface can be that any appropriate wireless communication link is (such as radio frequency (RF), micro-
Ripple, infrared ray (IR), ultraviolet (UV), visible ray etc.).The air interface 1616 can be wirelessly electrically accessed with any appropriate
Technology (RAT) is established.
More specifically, as described above, communication system 1600 can be multiple access system, and can use it is a kind of or
A variety of channel access schemes, such as CDMA, TDMA, FDMA, OFDMA and SC-FDMA etc..For example, in RAN 1604
Base station 1614a and each WTRU 1602a, 1602b, 1602c can implement such as Universal Mobile Telecommunications System (UMTS) land
Ground is wirelessly electrically accessed the radiotechnics of (UTRA) etc, and the technology can be connect in the air using wideband CDMA (WCDMA) to establish
Mouth 1616.WCDMA can include the communication protocols of such as high-speed packet access (HSPA) and/or evolved HSPA (HSPA+) etc
View.HSPA can include high-speed downlink packet access (HSDPA) and/or High Speed Uplink Packet access (HSUPA).
Base station 1614a and WTRU 1602a, 1602b, 1602c can implement such as Evolved UMTS Terrestrial and wirelessly be electrically accessed
Etc (E-UTRA) radiotechnics, the technology can be established using Long Term Evolution (LTE) and/or advanced LTE (LTE-A)
Air interface 1616.
In other embodiments, base station 1614a can implement IEEE 802.16 with WTRU 1602a, 1602b and 1602c
(World Interoperability for Microwave Access, WiMax (WiMAX)), CDMA2000, CDMA2000 1X, CDMA2000EV-DO, Interim Standard 2000
(IS-2000), Interim Standard 95 (IS-95), Interim Standard 856 (IS-856), global system for mobile communications (GSM), for GSM
Strengthen the radio access technologies such as data rate evolution (EDGE) and GSM EDGE (GERAN).
As an example, the base station 1614b in Figure 22 A can be wireless router, home node-b, family e nodes B and/or
Access point, and can using any appropriate RAT come facilitate regional area (such as place of business, house, the vehicles and
Campus etc.) in wireless connection.In one embodiment, base station 1614b can pass through implementation with WTRU 1602c and 1602d
IEEE 802.11 etc radiotechnics establishes WLAN (WLAN).In another embodiment, base station 1614b
Wireless Personal Area can be established with WTRU 1602c and 1602d by implementing IEEE 802.15 etc radiotechnics
Net (WPAN).In another example, base station 1614b and WTRU 1602c, 1602d can be by using based on cellular RAT
(such as WCDMA, CDMA2000, GSM, LTE, LTE-A etc.) establishes picocell and/or Femto cell.Such as Figure 22 A institutes
Show, base station 1614b can be directly connected to internet 1610.Base station 1614b is not necessarily required to access via core network 1606
Internet 1610.
RAN 1604 can be communicated with core network 1606, and the core network can be arranged to one or more
WTRU 1602a, 1602b, 1602c, 1602d provide appointing for voice, data, application and/or voice-over ip (VoIP) service
The network of what type.For example, core network 1606 can provide Call- Control1, billed services, servicing, in advance based on shift position
Paycall, Internet connection, video distribution etc., and/or perform the enhanced security feature of user's checking etc.Although scheming
Do not shown in 22A, it should be appreciated, however, that RAN 1604 and/or core network 1606 can directly or indirectly with other that
Communicated a bit from RAN 1604 using identical RAT and/or different RAT RAN.For example, except with using E-UTRA radio
Outside the RAN1604 connections of technology, core network 1606 can also be with other RAN (not shown)s using gsm radio technology
Communicated.
Core network 1606 can function as being used to access PSTN for WTRU 1602a, 1602b, 1602c and 1602d
1608th, the gateway of internet 1610 and/or other networks 1612.PSTN1608 can include providing plain old telephone service
(POTS) circuit switched telephone network.Internet 1610 can be including the use of the global interconnected computer of common communicating protocol
Transmission control protocol (TCP), UDP (UDP) in network equipment system, such as TCP/IP internet protocols race
With Internet protocol (IP).What network 1612 can include being possessed and/or being runed by other service suppliers wiredly and/or wirelessly leads to
Communication network.For example, network 1612 can include other core network for being connected with one or more RAN, the wherein network can be with
Identical RAT and/or different RAT is used from RAN 1604.
Some or all of WTRU 1602a, 1602b, 1602c, 1602d in communication system 1600 can include multimode energy
Power, that is to say, that WTRU 1602a, 1602b, 1602c and 1602d can include being used on different radio link and different nothings
One or more transceivers of line network service.For example, the WTRU 1602c shown in Figure 22 A may be configured to and use base
Communicated in the base station 1614a of cellular radiotechnics, and with the base station of the radiotechnics of IEEE 802 can be used
1614b communicates.
Figure 22 B are the system diagrams for illustrating WTRU 1602.WTRU can be user equipment (UE), movement station, WLAN
STA, fixation or mobile subscriber unit, pager, cell phone, personal digital assistant (PDA), smart phone, above-knee, online
Sheet, personal computer, wireless senser and consumer electronicses etc..WTRU 1602 can be used for one or more said
Communication system.As shown in Figure 22 B, WTRU 1602 can include processor 1618, transceiver 1620, transmitting/receiving means
1622nd, speaker/microphone 1624, numeric keypad 1626, display/touch pad 1628, non-removable memory 1630, removable
Except memory 1632, power supply 1634, global positioning system (GPS) chipset 1636 and other ancillary equipment 1638.Should
Solution, while keeping meeting embodiment, WTRU 1602 can also include any sub-portfolio of above-mentioned parts.
Processor 1618 can be general processor, application specific processor, conventional processors, digital signal processor (DSP),
Multi-microprocessor, the one or more microprocessors associated with DSP core, controller, microcontroller, application specific integrated circuit
(ASIC), field programmable gate array (FPGA) circuit, other any kind of integrated circuits (IC) and state machine etc..
Processor 1618 can perform Signal coding, data processing, Power Control, input/output processing and/or other any can make
The function that WTRU 1602 works in wireless environments.Processor 1618 is coupled to transceiver 1620, transceiver 1620
It is coupled to transmitting/receiving means 1622.Although processor 1618 and transceiver 1620 are depicted as independent group by Figure 22 B
Part, but it will be appreciated that processor 1618 and transceiver 1620 can be integrated in an electronic building brick and/or chip.
Transmitting/receiving means 1622 may be configured to go into or from base via air interface 1616 to launch or receive
Stand the signal of (such as base station 1614a).For example, in one embodiment, transmitting/receiving means 1622 can be configured
Into the antenna for launching and/or receiving RF signals.In another embodiment, as an example, transmitting/receiving means 1622 can be
It is configured to launch and/or receives IR, UV and/or emitter/detector of visible light signal.In a further embodiment, send out
Penetrate/receiving part 1622 may be configured to launch and receive RF and optical signal.It should be understood that transmitting/receiving means
1622 may be configured to launch and/or receive any combinations of wireless signal.
Although in addition, transmitting/receiving means 1622 is described as into single part in Figure 22 B, WTRU 1602 can be with
Including any amount of transmitting/receiving means 1622.More specifically, WTRU 1602 can use MIMO technology.Thus, exist
In one embodiment, WTRU 1602 can include via air interface 1616 come launch and receive two of radio signal or
Multiple transmitting/receiving means 1622 (such as one or more antennas).
Transceiver 1620 can be configured to be modulated the signal that transmitting/receiving means 1622 will launch, and
The signal received to transmitting/receiving means 1622 is demodulated.As described above, WTRU1602 can have multimode ability.Thus,
Transceiver 1620 can include allowing WTRU 1602 by one or more RAT (such as UTRA and IEEE 802.11) to enter
One or more transceivers of row communication.
WTRU 1602 processor 1618 is coupled to speaker/microphone 1624, numeric keypad 1626 and/or shown
Show device/touch pad 1628 (such as liquid crystal display (LCD) display unit and/or Organic Light Emitting Diode (OLED) display it is single
Member), and the user input data from these parts can be received.Processor 1618 can also be to speaker/microphone
1624th, numeric keypad 1626 and/or display/touch pad 1628 export user data.In addition, processor 1618 can be from any
Access information in appropriate memory (such as non-removable memory 1630 and/or removable memory 1632), and will letter
Breath is stored in these memories.The non-removable memory 1630 can include random access memory (RAM), read-only storage
(ROM), hard disk and/or be other any kind of memory storage devices.Removable memory 1632 can include subscriber identity
Module (SIM) card, memory stick and secure digital (SD) memory card etc..In other embodiments, processor 1618 can be from
Those are not physically located in WTRU 1602 memory access information, and data are stored in into these memories, wherein citing comes
Say, the memory can be located at server and/or home computer (not shown).
Processor 1618 can receive the electric power from power supply 1634, and may be configured to distribute and/or control use
The electric power of other assemblies in WTRU 1602.Power supply 1634 can be any suitable equipment powered for WTRU 1602.
For example, power supply 1634 can include one or more dry cell batteries (such as NI-G (Ni-Cd), nickel zinc (Ni-Zn), ni-mh (NiMH),
Lithium ion (Li-ion) etc.), solar cell and fuel cell etc..
Processor 1618 can also couple with GPS chip group 1636, and the chipset can be configured to provide and WTRU 1602
The related positional information (such as longitude and latitude) in current location.As the information from GPS chip group 1636 supplement and/
Or replace, WTRU 1602 can receive the position from base station (such as base station 1614a, 1614b) via air interface 1616 to be believed
Breath, and/or determine its position according to the signal timings from two or more receptions of base station nearby.It should be understood that protecting
Hold while meet with one or more equipment described herein, system and/or technology, WTRU1602 can be by any appropriate
Localization method obtain positional information.
Processor 1618 is also coupled to other ancillary equipment 1638, among these can include provide supplementary features,
Function and/or the one or more softwares and/or hardware module of wired or wireless connection.For example, ancillary equipment 1638 can wrap
Include accelerometer, digital compass, satellite transceiver, digital camera (being used for photo and/or video), USB
(USB) port, vibratory equipment, television transceiver, Earphone with microphone,Module, frequency modulation (FM) radio unit,
Digital music player, multimedia player, video game machine module and explorer etc..
Although the feature and key element using particular combination is described above, those of ordinary skill in the art will
Recognize, one or more or each feature and/or key element both can be used alone, can also be with other features and key element
Carry out any combinations.In addition to 802.11 agreement described herein, feature and key element described herein can be applicable to it
His wireless system.Although feature described herein and key element describe for uplink operation, methods described and mistake
Journey can also be applied to downlink parameter.Although being used herein SIFS to indicate different interframe spaces, other
Interframe space be equally it is adaptable, such as RIFS or other agreement time intervals.In addition, method described herein can be with
It is real in the computer program, software and/or the firmware that are run in Import computer computer-readable recording medium for computer and/or processor
Apply.Example on computer-readable media includes electric signal (being transmitted via wiredly and/or wirelessly connection) and computer can
Read storage media.Example on computer-readable storage medium includes but is not limited to read-only storage (ROM), arbitrary access
Memory (RAM), register, buffer storage, semiconductor memory apparatus, magnetic media (such as internal hard drive and detachable magnetic
Disk), magnet-optical medium and optical medium (such as CD-ROM disks and Digital Versatile Disk (DVD).With the processing of software context
Device can be used for implementing the RF transceiver in WTRU, UE, terminal, base station, RNC and/or any main frame.
Claims (35)
1. a kind of method that access point (AP) equipment by the first basic service set (the first BSS) performs, the AP with it is described
One or more of first BSS stations (STA) are communicated, and methods described includes：
It is determined that it is one or more be possibly used for it is related to one or more of the 2nd BSS STA uplink communication overlapping
The subband of BSS (OBSS) space reuse (OBSS SR)；
Determine the OBSS SR customizing messages of each in one or more of subbands, the customizing messages include with it is described
Each of one or more subbands are possibly used for the OBSS SR related to UL communications associated one of possibility
Or multiple threshold values；And
The one or more of STA being sent to the customizing messages via emitter in the first BSS.
2. the method as described in claim 1, wherein the customizing messages be by one in physics (PHY) layer preamble or
What multiple fields were sent.
3. the method as described in claim 1, wherein the customizing messages is to be sent to described the by least one of following
One or more of STA's in one BSS：First transmission or the second transmission.
4. the method as described in claim 1, wherein OBSS SR UL communications are at least one following：Non orthogonal frequency division
Multiple access (non-OFDMA) UL communicates or OBSS UL communications.
5. the method as described in claim 1, further comprise：Configure one or more of threshold values so that it is one or
The OBSS SR possibilities of the first subband in multiple subbands are relatively higher than the second subband in one or more of subbands
OBSS SR possibilities.
6. method as claimed in claim 2, wherein one or more of fields in the PHY layer preamble are included in UL
In OFDM (UL OFDMA) trigger frame.
7. the method as described in claim 1, wherein the OBSS SR of each in one or more of subbands are specific
Information also includes the size of one or more of subbands.
8. method as claimed in claim 7, wherein the size of at least one subband in one or more of subbands is
20MHz。
9. the method as described in claim 1, wherein at least one in one or more of threshold values is clear channel assessment (CCA)
(CCA) threshold value.
10. the method as described in claim 1, wherein at least one in one or more of threshold values is acceptable interference
Threshold value.
11. a kind of access point (AP) equipment, the AP equipment works in the first basic service set (BSS), the AP equipment with
One or more of described first BSS stations (STA) are communicated, and the AP equipment includes：
Processor, the processor are at least configured to：
It is determined that it is one or more be possibly used for it is related to one or more of the 2nd BSS STA uplink communication overlapping
The subband of BSS (OBSS) space reuse (OBSS SR)；And
Determine the OBSS SR customizing messages of each in one or more of subbands, the customizing messages include with it is described
Each of one or more subbands are possibly used for the OBSS SR related to UL communications associated one of possibility
Or multiple threshold values；And
Emitter, the emitter are at least configured to：
The customizing messages is sent to one or more of STA in the first BSS.
12. AP equipment as claimed in claim 11, wherein the emitter is further configured to cause the customizing messages
It is to be sent by one or more of physics (PHY) layer preamble field.
13. AP equipment as claimed in claim 12, wherein the emitter is further configured to cause the customizing messages
It is the one or more of STA being sent to by least one following in first BSS：First transmission or the second biography
It is defeated.
14. AP equipment as claimed in claim 11, wherein the emitter is further configured to cause the OBSS SR
UL communications are at least one following：Non orthogonal frequency division multiple access (non-OFDMA) UL communicates or OBSS UL communications.
15. AP equipment as claimed in claim 11, wherein the processor be further configured to determine it is one or more
Individual threshold value so that the OBSS SR possibilities of the first subband in one or more of subbands be relatively higher than it is one or more
The OBSS SR possibilities of the second subband in individual subband.
16. AP equipment as claimed in claim 12, wherein the emitter is further configured to cause the PHY layer preamble
One or more of fields in code are included in UL OFDMs (UL OFDMA) trigger frame.
17. AP equipment as claimed in claim 12, wherein the processor be further configured to cause it is one or more
The OBSS SR customizing messages of each in individual subband also includes the size of one or more of subbands.
18. AP equipment as claimed in claim 17, wherein the processor is further configured to one or more of sons
The size of at least one subband in band is 20MHz.
19. AP equipment as claimed in claim 11, wherein the processor be further configured to cause it is one or more
At least one in individual threshold value is clear channel assessment (CCA) (CCA) threshold value.
20. AP equipment as claimed in claim 11, wherein the processor be further configured to cause it is one or more
At least one in individual threshold value is acceptable interference threshold.
21. a kind of method that station (STA) by the first basic service set (the first BSS) performs, the STA, which is able to detect that, to be come
From the communication of access point (AP) equipment in the 2nd BSS, methods described includes：
It is possibly used for leading to the up-link of the STA (UL) on one or more from the AP by machine testing is received
Believe the information of the subband of related overlapping BSS (OBSS) space reuse (OBSS SR)；
Determine in one or more of subbands at least one is suitable for the OBSS SR related to UL communications；
Carrier Sense Multiple Access (CSMA/CA) mechanism with conflict avoidance is modified as following at least one：
The transmission priority lifted at least one assignment in one or more of subbands, or to include described one
Transmission is simultaneously restricted to by the transmission priority of the transmission channel assignment lifting of at least one subband in individual or multiple subbands
It is described at least one in one or more of subbands；And
Passed by emitter and using at least one subband in one or more of subbands to send OBSS SR UL
It is defeated.
22. method as claimed in claim 21, wherein OBSS SR UL communications are non-OFDM (non-OFDMA)
At least one of UL communicates or OBSS UL communicate.
23. method as claimed in claim 21, wherein described information are by one or more in physics (PHY) layer preamble
Individual field and from the AP detection.
24. method as claimed in claim 23, wherein one or more of fields in the PHY layer preamble are included in
In UL OFDMs (UL OFDMA) trigger frame.
25. a kind of method that first stop (the first STA) by the first Basic Service Set (BSS) performs, methods described include：
By receiver come since in the first BSS access point (AP) equipment receive with one or more subbands can be used for
Overlapping BSS (OBSS) space reuse of up-link (UL) the communication correlation at one or more of the 2nd BSS stations (STA)
The related customizing messages of the possibility of (OBSS SR), the customizing messages include and each of one or more subbands
The one or more threshold values associated available for the OBSS SR related to UL communications possibility；And
At least some information come by emitter into following at least one transmission customizing messages：The AP or institute
The other stations (STA) of one or more of the first BSS are stated, the transmission can be by one or more in the 2nd BSS
At least one STA detections in individual STA.
26. method as claimed in claim 25, wherein first STA is UL OFDMs (UL OFDMA) STA.
27. method as claimed in claim 25, wherein in one or more of STA in second BSS it is described extremely
A few STA is OBSS STA.
28. method as claimed in claim 25, wherein the OBSS on each in one or more of subbands
SR customizing messages also includes the size of one or more of subbands.
29. method as claimed in claim 28, wherein the size of at least one subband in one or more of subbands is
20MHz。
30. method as claimed in claim 25, wherein at least one in one or more of threshold values is that idle channel is commented
Fixed (CCA) threshold value.
31. method as claimed in claim 25, wherein at least one in one or more of threshold values is acceptable dry
Disturb threshold value.
32. method as claimed in claim 25, wherein in the customizing messages it is described it is at least some including with it is one
Or one or more threshold values that the OBSS SR for being used for UL communications of each in multiple subbands possibility is associated.
33. method as claimed in claim 25, wherein first STA is configured in one or more of subbands
Perform UL communications on first subband, and at least some information in the customizing messages be constrained to be and described first
Subband can be used for the associated one or more of threshold values of the OBSS SR of UL communications possibility.
34. method as claimed in claim 25, wherein first BSS is adjacent to the 2nd BSS.
35. method as claimed in claim 25, wherein the transmission is not specifically for one in the 2nd BSS
Or at least one STA in multiple STAS.
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| PCT/US2016/030030 WO2016176550A1 (en) | 2015-04-29 | 2016-04-29 | Methods and devices for sub-channelized transmission schemes in wlans |
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| CN201680024821.6A Active CN107637157B (en) | 2015-04-29 | 2016-04-29 | Method and apparatus for subchannelized transmission schemes in a WLAN |
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| US20210243628A1 (en) | 2021-08-05 |
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| AU2016255500B2 (en) | 2020-04-30 |
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